Supplementary Angles

This is a supplementary angles puzzle. Two sectors with supplementary angles make a half circle.

If you're not sure what you're supposed to do, click the "show me how" button.

When you're ready to play, click "my turn".

You can move the red and blue sectors by dragging them into place.

Leone Learning Systems, Inc. (LLS) is a North Shore company that provides online courses for kids anywhere and local teaching and tutoring services for students in Chicago and the Northern Suburbs of Chicagoland. LLS also provides a free geometry software package for children age 6 and up, and free resources for teachers and parents. This site includes information about classes taught, availability for tutoring, learning activities for kids, lesson plans, and an ongoing software and curriculum research and development effort.